<HTML>
<BODY BGCOLOR="white">
<PRE>
<FONT color="green">001</FONT>    <a name="line.1"></a>
<FONT color="green">002</FONT>    /*<a name="line.2"></a>
<FONT color="green">003</FONT>     * Copyright (C) 2011 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<FONT color="green">004</FONT>     *<a name="line.4"></a>
<FONT color="green">005</FONT>     * $Id: SpringDelegatingSchemaUpdate.html 44 2011-02-20 21:57:32Z archie.cobbs $<a name="line.5"></a>
<FONT color="green">006</FONT>     */<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    package org.dellroad.stuff.schema;<a name="line.8"></a>
<FONT color="green">009</FONT>    <a name="line.9"></a>
<FONT color="green">010</FONT>    import java.sql.Connection;<a name="line.10"></a>
<FONT color="green">011</FONT>    import java.sql.SQLException;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    /**<a name="line.13"></a>
<FONT color="green">014</FONT>     * Spring-enabled version of {@link DelegatingSchemaUpdate}.<a name="line.14"></a>
<FONT color="green">015</FONT>     *<a name="line.15"></a>
<FONT color="green">016</FONT>     * &lt;p&gt;<a name="line.16"></a>
<FONT color="green">017</FONT>     * This class provides the combined functionality of {@link DelegatingSchemaUpdate} and {@link AbstractSpringSchemaUpdate}.<a name="line.17"></a>
<FONT color="green">018</FONT>     *<a name="line.18"></a>
<FONT color="green">019</FONT>     * &lt;p&gt;<a name="line.19"></a>
<FONT color="green">020</FONT>     * When using Spring and setting the {@link #setDatabaseAction database action} to a {@link SQLDatabaseAction}, beans<a name="line.20"></a>
<FONT color="green">021</FONT>     * can be created succintly using the &lt;code&gt;&amp;lt;dellroad-stuff:sql-update&amp;gt;&lt;/code&gt; custom XML element, which works<a name="line.21"></a>
<FONT color="green">022</FONT>     * just like &lt;code&gt;&amp;lt;dellroad-stuff:sql&amp;gt;&lt;/code&gt; except that it wraps the resulting {@link SQLDatabaseAction}<a name="line.22"></a>
<FONT color="green">023</FONT>     * inside an instance of this class as the delegate.<a name="line.23"></a>
<FONT color="green">024</FONT>     *<a name="line.24"></a>
<FONT color="green">025</FONT>     * &lt;p&gt;<a name="line.25"></a>
<FONT color="green">026</FONT>     * For example:<a name="line.26"></a>
<FONT color="green">027</FONT>     * &lt;blockquote&gt;&lt;pre&gt;<a name="line.27"></a>
<FONT color="green">028</FONT>     *  &amp;lt;beans xmlns="http://www.springframework.org/schema/beans"<a name="line.28"></a>
<FONT color="green">029</FONT>     *    &lt;b&gt;xmlns:dellroad-stuff="http://dellroad-stuff.googlecode.com/schema/dellroad-stuff"&lt;/b&gt;<a name="line.29"></a>
<FONT color="green">030</FONT>     *    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"<a name="line.30"></a>
<FONT color="green">031</FONT>     *    xsi:schemaLocation="<a name="line.31"></a>
<FONT color="green">032</FONT>     *      http://www.springframework.org/schema/beans<a name="line.32"></a>
<FONT color="green">033</FONT>     *        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd<a name="line.33"></a>
<FONT color="green">034</FONT>     *      &lt;b&gt;http://dellroad-stuff.googlecode.com/schema/dellroad-stuff<a name="line.34"></a>
<FONT color="green">035</FONT>     *        http://dellroad-stuff.googlecode.com/svn/wiki/schemas/dellroad-stuff-1.0.xsd&lt;/b&gt;"&amp;gt;<a name="line.35"></a>
<FONT color="green">036</FONT>     *<a name="line.36"></a>
<FONT color="green">037</FONT>     *      &amp;lt;!-- Schema update to add the 'phone' column to the 'User' table --&amp;gt;<a name="line.37"></a>
<FONT color="green">038</FONT>     *      &lt;b&gt;&amp;lt;dellroad-stuff:sql-update id="addPhone"&amp;gt;ALTER TABLE User ADD phone VARCHAR(64)&amp;lt;/dellroad-stuff:sql-update&amp;gt;&lt;/b&gt;<a name="line.38"></a>
<FONT color="green">039</FONT>     *<a name="line.39"></a>
<FONT color="green">040</FONT>     *      &amp;lt;!-- Schema update to run some complicated external SQL script --&amp;gt;<a name="line.40"></a>
<FONT color="green">041</FONT>     *      &lt;b&gt;&amp;lt;dellroad-stuff:sql-update id="majorChanges" depends-on="addPhone" resource="classpath:majorChanges.sql"/&amp;gt;&lt;/b&gt;<a name="line.41"></a>
<FONT color="green">042</FONT>     *<a name="line.42"></a>
<FONT color="green">043</FONT>     *      &amp;lt;!-- more beans... --&amp;gt;<a name="line.43"></a>
<FONT color="green">044</FONT>     *<a name="line.44"></a>
<FONT color="green">045</FONT>     *  &amp;lt;/beans&amp;gt;<a name="line.45"></a>
<FONT color="green">046</FONT>     * &lt;/pre&gt;&lt;/blockquote&gt;<a name="line.46"></a>
<FONT color="green">047</FONT>     */<a name="line.47"></a>
<FONT color="green">048</FONT>    public class SpringDelegatingSchemaUpdate extends AbstractSpringSchemaUpdate {<a name="line.48"></a>
<FONT color="green">049</FONT>    <a name="line.49"></a>
<FONT color="green">050</FONT>        private DatabaseAction action;<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>        @Override<a name="line.52"></a>
<FONT color="green">053</FONT>        public void afterPropertiesSet() throws Exception {<a name="line.53"></a>
<FONT color="green">054</FONT>            super.afterPropertiesSet();<a name="line.54"></a>
<FONT color="green">055</FONT>            if (this.action == null)<a name="line.55"></a>
<FONT color="green">056</FONT>                throw new Exception("no DatabaseAction configured");<a name="line.56"></a>
<FONT color="green">057</FONT>        }<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>        /**<a name="line.59"></a>
<FONT color="green">060</FONT>         * Configure the {@link DatabaseAction}. This is a required property.<a name="line.60"></a>
<FONT color="green">061</FONT>         *<a name="line.61"></a>
<FONT color="green">062</FONT>         * @see DatabaseAction<a name="line.62"></a>
<FONT color="green">063</FONT>         */<a name="line.63"></a>
<FONT color="green">064</FONT>        public void setDatabaseAction(DatabaseAction action) {<a name="line.64"></a>
<FONT color="green">065</FONT>            this.action = action;<a name="line.65"></a>
<FONT color="green">066</FONT>        }<a name="line.66"></a>
<FONT color="green">067</FONT>    <a name="line.67"></a>
<FONT color="green">068</FONT>        @Override<a name="line.68"></a>
<FONT color="green">069</FONT>        public void apply(Connection c) throws SQLException {<a name="line.69"></a>
<FONT color="green">070</FONT>            this.action.apply(c);<a name="line.70"></a>
<FONT color="green">071</FONT>        }<a name="line.71"></a>
<FONT color="green">072</FONT>    }<a name="line.72"></a>
<FONT color="green">073</FONT>    <a name="line.73"></a>




























































</PRE>
</BODY>
</HTML>
